Precalculus > M.12 Trigonometric ratios: find a side length 62D Find BC. B C BC= 00 12/31 √ 30° Write your answer in simplified, rationalized form. Do not round. D Learn with an example​


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The standard deviation of the data set is 11.75.

To calculate the standard deviation of the data set, we first need to find the variance, which is the average of the sum of squares of the differences between each data value and the mean. We already calculated the sum of squares of the differences in Part (c), which is 828.

The formula for variance is:

variance = sum of squares of differences / number of data values

Since we have six data values, the variance is:

variance = 828 / 6

variance = 138

Now we can calculate the standard deviation, which is the square root of the variance:

standard deviation = sqrt(variance)

standard deviation = sqrt(138)

standard deviation = 11.75 (rounded to two decimal places)

Therefore, the standard deviation of the data set is 11.75.

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The inequality that represents the graph is:

x≥ -3

The inequality that represents the graph is:

x < 2

We have,

11.

From the number line,

The dot is in -3 and it extends infinitely to the right.

So,

The inequality that represents the graph is:

x≥ -3

And,

From the number line,

The open dot is in 2 and it extends infinitely to the left.

So,

The inequality that represents the graph is:

x < 2

Thus,

The inequality that represents the graph is:

x≥ -3

The inequality that represents the graph is:

x < 2

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Answer:

it is 20.00 hope this answer helps.

Answer:

14/33

Step-by-step explanation:

1/3

= 1/3 x 11/11

= (1 x 11)/(3 x 11)

= 11/33

2/11

= 2/11 x 3/3

= (2 x 3)/(11 x 3)

= 6/33

1/3 - 2/11 + 9/33

= 11/33 - 6/33 + 9/33

= (11 - 6 + 9)/33

= (5 + 9)/33

= 14/33

The cost of 13 yards of material sold at #1000 per yard would be:

13 x #1000 = #13,000

Answer:11.7

Step-by-step explanation:

σ =√137.63265306122

σ= 11.731694381513

Answer:

5 (19 + 12)

Step-by-step explanation:

You add up the red and black pens and multiply by 5, which indicates the 5 bags

The total deer population for year 8 will be D. about 2081 deer.

To calculate the total deer population, we use the mark-recapture formula where: N = M * C/R

M = Total number of deer population captured and marked

C = Total number of deer population that had or did not have a mark

R = Total deer population recaptured and marked

So, for the given problem, the figures are as follows:

M = 1608

C = 110

R = 85

N = 1608 * 85 = 176,880/85 = 2080.94

So, the estimated deer population is about 2081 deer.

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a. The values of k for which points A, B, and C are collinear are k = 3 and k = -2.

b. The value of k for which AB is parallel to CD is k = 13.

a. slope AB = (k+4-9)/(k+1-0) = (k-5)/(k+1)

The slope of AC is:

slope AC = (k+3-9)/(2k-0) = (k-6)/(2k)

Since A, B, and C are collinear, slope AB = slope AC. Therefore, we have:

(k-5)/(k+1) = (k-6)/(2k)

2k(k-5) = (k+1)(k-6)

2k^2 - 10k = k² - 5k - 6

k = 3 or k = -2

(b)  The slope of AB is:

= (k+4-9)/(k+1-0) = (k-5)/(k+1)

The slope of CD is:

= (k+6-k-3)/(2k+2-2k) = 3/2

Since AB is parallel to CD, slope AB = slope CD. Therefore, we have:

(k-5)/(k+1) = 3/2

2(k-5) = 3(k+1)

k = 13

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Using the laws of exponents, the equivalent expression would be 1 / 64.

To find the equivalent expression of ( 4 / 7 ) ⁻ ³  . 7 ⁻³, we can use the law of exponents.

Using this law, we get:

( 4 / 7 ) ⁻ ³  =  ( 1 / ( 4 / 7 )) ³

( 1 / ( 4 / 7 )) ³ = ( 7 / 4 ) ³

( 7 / 4) ³ x 7 ⁻³

( 7 / 4) ³ x ( 1 /7 ³ )

(( 7 ³ ) /( 4 ³ ) ) x ( 1/ 7 ³ )

( ( 7 ³ ) / ( 4 ³ ) )  x ( 1 / 7 ³ ) = 1 / (4 ³ )

1 / (4 ³ ) = 1 / 64

In conclusion, the equivalent expression is 1 / 64.

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The coordinates of point A' are (4,1) in the given rectangle.

According to the shown figure, the coordinate of the given rectangle can be written as:

The coordinates of vertice A are (4, 3)

As we know that the x-coordinate of the reflected point will be the same as the x-coordinate of the original point.

Therefore, the x-coordinate of point A' will be:

x-coordinate of A' = 4

Here, the y-coordinate of point A is 3, which is 1 unit above the line y = 2. So, the reflection of point A across the line y = 2 will be 1 unit below the line y = 2.

So, the y-coordinate of point A' will be:

y-coordinate of A' = 2 - 1 = 1

Therefore, the coordinates of point A' are (4,1).

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Answer:

[tex]g(x) = f(x) - 4[/tex]

Step-by-step explanation:

We have been given a graph for f(x) and a table for g(x) and we have to find the transformation to map f(x) to g(x)

Let's find the function values for f(x) and g(x) at specific (easily distinguishable) x values for both

x               f(x) from graph                        g(x) from table

0                         4                                                0

1                          3                                                -1

2                          4                                                0

The function values for f(x) for x =  -1 and x = 3 are a bit difficult to read since they do not cross at  a grid intersection          

From the above table we see that for a specific x, g(x) value is 4 less than the f(x) value

Therefore the transformation is
g(x) = f(x) - 4    

Therefore g(x) is shifted downward by 4 points

I have plotted both f(x) and g(x) using the transformation; You can see the points fit

[tex]-------------------------------[/tex]

Ignore this part if you wish

The equation for f(x) is
f(x) = (x - 1)² + 3  in vertex form

or

f(x) = x² − 2x + 4​ in polynomial form

g(x) will then be
x² - 2x + 4 - 4 = x² -2x

The probability that Nippon will get 100% on the quiz by random guessing is 1/16.

To calculate the probability of Nippon getting a 100% on the quiz by guessing on all 4 true-false questions, you need to consider the probability of guessing correctly on each individual question.
The probability of guessing correctly on a single true-false question is 1/2, as there are two possible answers (true or false).

Since there are 4 questions, you need to find the probability of guessing correctly on all 4 questions.
To do this, you multiply the probabilities of guessing correctly on each individual question: [tex](1/2) \times  (1/2) \times  (1/2) \times  (1/2).[/tex]
When you multiply these probabilities, we  get (1/16), which is the probability of Nippon getting 100% on the quiz by guessing on all 4 true-false questions.
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The appropriate inference procedure is the t test for μdiff.

We know that,

The mean is a basic mathematical average of two or more values.

There are several methods for computing the mean for a given collection of numbers, including the arithmetic mean approach, which utilizes the sum of the numbers in the series, and the geometric mean method, which is the average of a set of products.

The t test is used to compare the means of two groups.

We also know that,

Inferential statistics is a field of statistics that employs a variety of analytical procedures to draw conclusions about population data from sample data. Aside from inferential statistics, descriptive statistics are a subset of statistics. Inferential statistics aid in drawing inferences about the population, whereas descriptive statistics summarize the data set's features.

It is a very important tool that can be used in inferential statistics.

Since it shows whether the means of two groups are significantly different, we can say that, the appropriate inference procedure is the t test for μdiff.

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The solution to the equation is x = 1.6.

Let's start by distributing the 3 on the right side of the equation:

25 + 2x = 12x + 9

Next, we can simplify the equation by moving all the x terms to one side and all the constant terms to the other side. To do this, we'll subtract 2x from both sides:

25 = 10x + 9

Then, we'll subtract 9 from both sides:

16 = 10x

Finally, we'll divide both sides by 10:

x = 1.6

So the solution to the equation is x = 1.6.

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Hello!

m     dm    cm    mm

5   ,   0        0

500cm = 5m

Using the law of sines, the value of a in the given triangle, to the nearest tenth, is calculated as: 19.9.

The law of sines that we would apply is given as:

sin A/a = sin B/b = sin C/c.

Given the following:

a = ?

A = 64 degrees

b = 17

B = 50 degrees

Plug in the values into the equation, sin A/a = sin B/b:

sin 64/a = sin 50/17

Cross multiply:

a * sin 50 = sin 64 * 17

Divide both sides by sin 50

a * sin 50 / sin 50 = sin 64 * 17 / sin 50

a ≈ 19.9 [nearest tenth]

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The value of a to the nearest tenth is 20.0

The sine rule states that if a, b and c are the lengths of the sides of a triangle, and A, B and C are the angles in the triangle; with A opposite a, etc., then a/sinA=b/sinB=c/sinC.

Using sine rule to solve for a;

The side opposite to angle 64 is a and the side opposite to angle 50 is 17

a/sinA = b/sinB

a/sin64 = 17/sin50

asin50 = 17sin64

0.766a = 17 × 0.899

0.766a = 15.283

a= 15.283/0.766

a = 20.0( nearest tenth)

Therefore the value of a is 20.0

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Answer: see below. the answers are bolded.

Step-by-step explanation:

1. Since x+55 forms a straight line, x+55 = 180. Solve that equation and you get x = 125. All interior angles in a triangle = 180. That means: 55+45+y = 180. Solve that equation and you get y = 80.

2. 110+x forms a straight line. 110+x = 180. Solve that equation and you get x = 70. Now that you have x, and you know that the interior angles of a triangle add up to 180, set up an equation. 70 + 65 + y = 180. Solve, and

y = 45

Hope I helped :)

This phrase can be used in a variety of contexts, from simple arithmetic problems to more complex Algebraic equations and expressions.

The algebraic expression ÷ 8 can be written in a variety of ways depending on the context and the specific operation being performed. However, in general, the phrase "divided by 8" or "the quotient of x and 8" can be used to represent this expression.

For example, if we have an algebraic expression such as 24 ÷ 8, we can write it as

24 divided by 8

the quotient of 24 and 8

24/8

In each case, the idea is the same: we are dividing 24 into 8 equal parts, or finding how many groups of 8 are contained in 24.

In the context of an algebraic equation or expression, the phrase "divided by 8" is often used to indicate that the variable or expression preceding it is being divided by 8. For example:

3x ÷ 8

(2y + 5) ÷ 8

In these cases, we are dividing the value of 3x or the sum of 2y and 5 by 8. The quotient of these expressions will depend on the specific values of x and y."divided by 8" is a commonly used phrase to represent the algebraic expression ÷ 8. This phrase can be used in a variety of contexts, from simple arithmetic problems to more complex algebraic equations and expressions.

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The above is a long division problem, where 40 is the divisor and 10 is the dividend. the answer is 00.250 or 0.250. Long division is also called synthetic division.

       00. 250___________________

40 | 10.000

  -   0

      1 0

 -       0

     1 0 0

-        80
         2 0 0

-         2 0 0

             0   0

-                0      

                 0

Note that the answer is given in three decimal places that is 0.250

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Part A: The table that displays a complete list of possible outcomes would be = Table B, that is option B.

Part B: The probability that the chosen events will take place = 0.3.

To calculate the probability of the given event the formula that should be used is given below. That is;

Probability = possible outcome/sample space

The total number of blues balls = 1

The total number of red balls = 2

The total number of yellow balls = 2

The total number of balls = 5, while total number of colour = 3

For part A: the possible sample outcomes = (H,B), (HR), (HY), (TB), (TR), (TY).

For part B:

Using the formula the possible outcome = 2

Sample space = 7

Probability = 2/7 = 0.3

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Answer:

The answer is zero.

Step-by-step explanation:

The simplified expression of 2|5k - 3/5 + 1/10k| is |51/5k - 6/5|

From the question, we have the following parameters that can be used in our computation:

2|5k-3/5+1/10k

Express properly

So, we have

2|5k - 3/5 + 1/10k|

Collect the like terms in the expression

So, we have the following representation

2|5k - 3/5 + 1/10k| = 2|5k  + 1/10k - 3/5|

Evaluate the like terms

This gives

2|5k - 3/5 + 1/10k| = 2|51/10k - 3/5|

Expand the brackets

2|5k - 3/5 + 1/10k| = |51/5k - 6/5|

Hence, the simplified expression of 2|5k - 3/5 + 1/10k| is |51/5k - 6/5|

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With the values provided, we can find both the volume and surface area.

Volume:

Formula = pi x r^2 x h

---r is the radius, h is the height

Volume = pi x (3)^2 x 7

Volume = pi x 36 x 7

Volume = 252pi mi^3 = 791.68 mi^3

Surface Area:

Formula = 2 x pi x r x h + 2 x pi x r^2

---r is the radius, h is the height

Surface Area = 2 x pi x 3 x 7 + 2 x pi x (3)^2

Surface Area = 42pi + 18pi

Surface Area = 60pi mi^2 = 188.50 mi^2

Hope this helps!

After 7 years, you will have approximately $[tex]24,156.36[/tex] in your savings account.

To calculate the final amount in your savings account after 7 years with continuous compounding, we can use the formula for compound interest with continuous compounding:

[tex]\[ A = P \times e^{rt} \][/tex]

Where:

- A is the final amount in the account

- P is the initial principal (the amount you deposit)

- e is Euler's number (approximately 2.71828)

- r is the interest rate (expressed as a decimal)

- t is the time period in years

In this case, you have won $12,000 in the lottery, so P = $12,000. The interest rate is [tex]7.5\%[/tex], which is equivalent to [tex]0.0.75[/tex] in decimal form. The time period is [tex]7[/tex] years.

Plugging these values into the formula, we get:

[tex]\[ A = 12000 \times e^{0.075 \times 7} \][/tex]

Calculating the exponential term:

[tex]\[ e^{0.075 \times 7} \approx 2.013 \][/tex]

Substituting this back into the equation:

[tex]\[ A = 12000 \times 2.013 \]\[ A \approx 24156.36 \][/tex]

So, after 7 years, you will have approximately $[tex]24,156.36[/tex] in your savings account.

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Transactions are larger than others Bank B may be the cheaper option even if you make more than 35 transactions.

To compare the cost of using Bank A and Bank B need to consider the total cost based on the number of transactions.

Let's say you make x transactions in a month.

For Bank A the monthly cost is a fixed fee of $45 regardless of the number of transactions.

For Bank B the monthly cost is a fee of $20 plus $0.70 for each transaction.

So the total cost for Bank B is:

Total cost = $20 + $0.70x

The break-even point where the total cost of Bank A and Bank B are equal need to solve the following equation:

45 = 20 + 0.70x

Subtracting 20 from both sides, we get:

25 = 0.70x

Dividing both sides by 0.70, we get:

x = 35.71

If you make more than 35 transactions in a month Bank A is the cheaper option.

If you make fewer than 35 transactions Bank B is the cheaper option.

Analysis assumes that all transactions are of the same amount.

To compare the total cost of both banks based on the actual amounts of the transactions.

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Answer: 678

Step-by-step explanation: ii

Answer:

216.

Step-by-step explanation:

To solve this expression, you can first simplify the expression inside the parentheses:

45 - (25 + 8) = 45 - 33 = 12

Then you can substitute this simplified expression back into the original equation and multiply by 18:

(12) X 18 = 216

Answer:

Step-by-step explanation:

so how to help you but you do a good job